<template>
  <el-card>
    <div slot="header" class="header">
      <span>销售额类别占比</span>
      <el-radio-group v-model="value">
        <el-radio-button label="全部渠道"></el-radio-button>
        <el-radio-button label="线上"></el-radio-button>
        <el-radio-button label="门店"></el-radio-button>
      </el-radio-group>
    </div>
    <div class="charts" ref="charts"></div>
  </el-card>
</template>

<script>
import * as echarts from 'echarts'

export default {
  name: 'Category',
  data() {
    return {
      value: '全部渠道'
    }
  },
  mounted() {
    // 饼图
    const myCharts = echarts.init(this.$refs.charts)
    myCharts.setOption({
      title: {
        text: '视频',
        subtext: '1048',
        left: 'center',
        top: 'center'
      },
      tooltip: {
        trigger: 'item'
      },
      series:  [
        {
          name: 'Access From',
          type: 'pie',
          radius: ['40%', '70%'],
          avoidLabelOverlap: false,
          itemStyle: {
            borderRadius: 10,
            borderColor: '#fff',
            borderWidth: 2
          },
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          },
          labelLine: {
            show: true
          },
          data: [
            { value: 1048, name: '搜索引擎:1048' },
            { value: 735, name: '直接访问:735' },
            { value: 580, name: '邮箱营销:580' },
            { value: 484, name: '联盟广告:484' },
            { value: 300, name: '视频广告:300' }
          ]
        }
      ]
    })

    // 绑定事件
    myCharts.on('mouseover', (params) => {
      const {name, value} = params.data
      // 重新设置标题
      myCharts.setOption({
        title: {
          text: name,
          subtext: value
        }
      })
    })
  }
}
</script>

<style scoped>
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/deep/ .el-card__header {
  padding: 8px 20px;
  border: 1px solid #eee;
}

.charts {
  width: 100%;
  height: 300px;
}

</style>
